SigAir MCX Virtus ProForce

  • Fully Licensed
  • VFC Avalon Gearbox
  • Quick Change Spring

This Airsoft Electric Gun is built to a stunning standard under full license from Sig Sauer, made by VFC with the Avalon Gearbox. Not only do you get a rock solid exterior, but a Quick Change Spring System, Steel Tooth Piston and Rotary Hop Unit are a short list of what awaits inside.

Full description


The Sig Sauer MCX is an adaptation of the MPX Platform, which offers a longer overall length, larger 5.56x45mm caliber (meaning it accepts regular old M4/STANAG Magazines) as well as some furniture upgrades to make the platform as effective as it is good-looking. This Airsoft Replica of the MCX is fully licensed by Sig Sauer, and produced by VFC, including their Avalon Gearbox.

The front of the AEG features a gorgeous Muzzle Brake, under which you will find a 14mm CCW Thread for you to install Tracer Units, Suppressors and other Muzzle Devices. The barrel runs free-floating through the licensed M-LOK Handguard which is also CNC Machined for precision. This is where the battery is stored, and is easily accessed by knocking out the front body pin and sliding the Handguard forwards to reveal the Mini Tamiya connector. On top of the Handguard/Receiver runs a full length top 20mm rail which is perfect for mounting Optics/Sights to improve your aim and/or the aesthetics of this beauiful replica.

The Receiver will be a familiar layout to anyone who has used an M4 platform before, with Ambidextrous Controls for the Fire Selector, Magazine Release and Charging Handle, making this very friendly for both Left and Right Handed players. The Receiver is adorned with realistic trademarks from SIG/VIRTUS branding to a Unique Serial Number which is under-ratedly important to identifying your kit. The Receiver accepts standard M4/STANAG Magazines which is great for those who already own appropriate mags, and even better news for those who don't, as compatible magazines are readily available and low-cost. The Charging Handle opens the Dust Cover and locks the Mock Bolt to the rear for easy adjustment of the Rotary HOP dial. This dial applies backspin to your BBs as they leave the barrel to theoretically improve range/consistency when using the correct settings and BB weights. To release the Mock Bolt once it has locked open, simply press the Bolt Release on the nearside of the Receiver.

The rear of the replica features a Skeleton Style Adjustable Stock which can be set to one of three positions, to suit different users and environments. The Stock has an integrated Sling Loop for One-Point Slings, as well as Front, Mid and Rear QD Sling Sockets for the connection of Quick Release Sling Loops. The stock is also where the Quick Change Spring is accessed, by opening the stock fully and removing the Grub Screw to remove it. The Spring Guide can then be easily accessed and is removed with a half turn. This is great for those that play at different sites with various Output Power Limits, or for those who want to float between Assault Rifle and DMR play.

The core of the replica features the VFC Avalon Gearbox, which is crammed with improved Bearings, the aforementioned Quick Change Spring System, an integrated MOSFET, Piston w/ Steel Rack and a High Torque Neodymium Motor.

Included in the box is a 120rnd Mid Cap Magazine which is loaded from the top using a Speedloader, and will feed BBs consistently until empty, as well as the gun itself and a User Manual. If you're looking for the hottest AEG on the market, which features a fully licensed design and Quick Change Spring System coupled with robust interior and exterior construction, then look no further than the SigAir MCX Virtus ProForce.


  • Sig Sauer MCX Virtus Replica
  • Fully Licensed Design
  • VFC Avalon Gearbox
  • Quick Change Spring
  • 14mm CCW Thread
  • CNC Machined M-LOK™ Handguard
  • Full Length Top 20mm Rail
  • Ambidextrous Mag Release
  • Ambidextrous Fire Selector
  • Ambidextrous Charging Handle
  • Rotary HOP Unit
  • Front, Mid & Rear QD Sling Sockets
  • Textured Pistol Grip
  • Three Position Sliding Skeleton Stock
  • Incredibly Robust Exterior Build
  • 120rnd Mid Cap Magazine
  • Functional Mock Bolt Hold-Open
  • Front Wired / Mini Tamiya
  • Unique Serial Number
  • Markings:
    • VIRTUS
    • SIG Logo

Package Includes

  • SigAir MCX Virtus ProForce
  • 120rnd Mid Cap Magazine
  • User Manual

Special Instructions

The externals of the replica are metal where they would be on the real world gun. This includes things like the outer barrel, handguard, and receiver. If a real world gun has polymer parts then the gun will still be marked as full metal externals, examples of this would be an M4, where the Stock and Pistol grip are always made from Polymer.



Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 325fps ± 10%, using 0.20g BB
Screwdriver Icon
Included Items
  • Magazine
  • Instruction Manual
Skill Level Icon
User Skill Level
Regular Player

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.907kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Two Tone Icon
Pre Two-Toned
Construction Icon
CNC Machined M-LOK Handguard, Alloy Receiver, Outer Barrel Assembly, Stock Guides, Magazine. Polymer Pistol Grip and Stock.
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
Magazine Style Icon
Magazine Style
STANAG, M4 / AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Behind mock bolt when charging handle pulled to the rear


Weapon Furniture Icon
  • Railed Handguard
  • Railed Receiver
  • Ambidextrous Charging Handle
  • Ambidextrous Magazine Release
  • Sliding Stock
  • Ambidextrous Fire Selector
  • Threaded Outer Barrel
  • QD Sling Point
Rail System Icon
Rail System
20mm RIS / RAS , MLOK Rail System,
Weapon Length Extended
Stock Positions
3 Position
Sight Type Icon
Sight Type
Sling Plate Icon
Sling Options
QD , Loop ,


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Inner Barrel Length

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 120 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Front Wired
Spring Change Icon
Gearbox Quick Change Spring
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Notepad Icon
Tested Using
ASG Blaster 0.20g BBs
Notepad Icon
Test Date

Detailed Power Tests

FPS, using 0.20g BB
Approx. 325fps, using 0.20g BB

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